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The perimeter of two squares are 40 cm and 32 cm. The perimeter of a third square whose area is the difference of the area of the two squares is
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- 24 cm
- 42 cm
- 40 cm
- 20 cm
- 24 cm
Correct Option: A
Side of one square = 40 4 = 10 cm.
[∵Perimeter = 4 × side]
Side of other square = 32/4 = 8 cm.
According to the question, Area of third square = (10)² – (8)² = 100 – 64 = 36 sq.cm.
Side of third square= 36 = 6 cm.
Its perimeter = 4 × 6 = 24 cm.
